/*
 * OrangeGrass
 * Copyright (C) 2009 Vyacheslav Bogdanov.
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0-standalone.html>.
 */
#ifndef IOGSTATISTICS_H_
#define IOGSTATISTICS_H_


class IOGStatistics
{
public:
	virtual ~IOGStatistics() {}

	// add vertex / face count.
	virtual void AddVertexCount (
		unsigned long _Vert, 
		unsigned long _Faces) = 0;

	// add texture switch.
	virtual void AddTextureSwitch () = 0;

	// add vertex buffer switch.
	virtual void AddVBOSwitch () = 0;

	// add draw call.
	virtual void AddDrawCall () = 0;

	// reset counters.
	virtual void Reset () = 0;

	// get frame statistics.
	virtual void GetStatistics (
		unsigned long& _Verts, 
		unsigned long& _Faces,
		unsigned long& _TextureSwitches,
		unsigned long& _VBOSwitches,
		unsigned long& _DrawCalls ) const = 0;
};


#endif
